Wheel chock unit



FIG. 1 is a side elevational view of a wheel chock unit showing my new design.

FIG. 2 is a side elevational view thereof opposite to that shown in FIG. 1.

FIG. 3 is an end elevational view of one of the wheel chocks as viewed along line 3--3 in FIG. 2.

FIG. 4 is a top plan thereof.

FIG. 5 is an end elevational view thereof.

FIG. 6 is a bottom plan view thereof.

The pattern of apertures which is fragmentarily shown in all views of the drawing is understood to be repeated uniformly throughout all of the surfaces of the two wheel chocks comprising the unit. 

The ornamental design for a wheel chock unit, substantially as shown and described. 